Uniswap Reveals Robinhood Uses TJAR System to Convert Fees Into Two Stablecoins
Key Facts
Uniswap Labs said Robinhood uses the TJAR system to convert fees it collects through the Uniswap API on supported networks into USDC and USDG. The integration puts onchain fee conversion on a path governed by rules set by the operator, rather than treating it as a system for managing all of Robinhood’s fee revenue. Uniswap published details of the use as part of its presentation of infrastructure it developed to convert accumulated assets and tokens into a token chosen by the platform. This comes as Robinhood’s cryptocurrency transaction revenue fell in the third quarter of 2026, despite growth in the company’s total revenue. TJAR handles fees tied to Uniswap API activity and does not in itself mean the company has announced new revenue.
The infrastructure consists of a Token Jar that collects native assets and ERC-20 tokens sent to it, and a Releaser that sets rules for converting them into the token chosen by the operator. According to Uniswap’s explanation, a searcher provides a specified amount of the chosen token in exchange for the assets accumulated in the container. After the conversion is executed, the chosen token goes to the destination set by the operator. This mechanism allows a group of assets to be converted into specified outputs without the operator changing the conversion rules each time the accumulated assets change. Uniswap said Robinhood’s containers can receive additional fee sources in the future without changing the conversion mechanism itself.
The Token Jar system handled more than $15.3 million in conversions during September, when Uniswap used it for protocol fees, according to data cited by The Block. The figure indicates use of the infrastructure before its expansion to other applications, but refers to Token Jar conversions in September and does not represent Robinhood fees. Uniswap said TJAR originated in infrastructure for converting protocol fees and the UNI burn mechanism, before being generalized into reusable infrastructure for blockchain systems. This background links Robinhood’s current use to a mechanism Uniswap had developed for its own operations. The company also said the system was audited by OpenZeppelin.
Uniswap developer documentation lists the Robinhood network among networks on which TJAR has been deployed, with network identifier 4663. Uniswap had announced that its v2, v3, v4 and UniswapX versions were available on Robinhood Chain, alongside support for the app, wallet and API. This places fee conversion in the context of broader cooperation between the two parties on the network, where fees covered by the integration pass through the Uniswap API. Uniswap also announced that TJAR was available to other teams and was live on seven networks at the time of the announcement on October 29, 2026. The company said additional networks would follow.
Robinhood’s third-quarter 2026 results showed total net revenue up 12% year over year to $1.42 billion, while cryptocurrency transaction revenue fell 55% to $120 million. Combined nominal cryptocurrency trading volume at Robinhood and Bitstamp fell 38% to $50 billion during the quarter. Nominal trading volume through the Robinhood app alone was $21 billion, down 48% year over year. By contrast, the company said Robinhood Chain had become one of the top five networks by revenue and volume in its first quarter on mainnet. It added that decentralized trading volume on the network exceeded $80 billion and its fees exceeded $50 million during that period.
Uniswap documentation says the infrastructure supports an optional protocol fee, but adds that "there is no fee set today." The announced use of TJAR therefore focuses on converting fees according to target assets and the operator’s rules, while the protocol fee option remains inactive according to the documentation. This distinction between the conversion mechanism and the fee reflects that making the infrastructure available does not in itself mean new fees are being imposed on users. On the commercial expansion front, Robinhood plans to begin rolling out its product suite in Dubai during 2027 after receiving a license from the Dubai Financial Services Authority. The company did not specify a detailed timetable for the stages of that rollout in its statement.